Fake Mars Colony

A decade before Elon Musk founded his fast-rising rocket company, SpaceX, or spoke publicly about colonizing Mars, a different billionaire captivated the world with Biosphere 2.

Ed Bass, an oil tycoon, spent about $250 million to build and operate that facility as a proof-of-concept for a permanent, self-sustaining habitat on Mars. Four men and four women sealed themselves inside the airtight space in September 1991 and emerged two years later.

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